html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #000;
}

.embedded-web-container {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    margin: 0;
    padding: 0;
}

.embedded-frame {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    border: 0;
    margin: 0;
    padding: 0;
    display: block;
    background: #000;
}